AORANINC TK102 Mini Spy Real Time Vehicle GPS Tracker GSM GPRS GPS System Security Global Tracking Device for Car Build-in GPS personal locator High sensitivity, new technology and latest GPS SiRF-Star III chipset Locate the locator holder by the mobile phone via SMS Powerful magnet + waterproof design can be adsorbed in the hidden place of car. SOS button send out exact location for immediate rescue/action.